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单选题
public class ClassA{ public int getValue(){ int value=0; boolean setting=true; String title="Hello"; if(value||(setting && title=="Hello")){return 1;} if(value==1&title.equals("Hello")){return 2;} } } And: ClassA a=new ClassA(); a.getValue(); What is the result?()
A
1
B
2
C
Compilation fails.
D
The code runs with no output.
E
An exception is thrown at runtime.
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更多 “单选题public class ClassA{ public int getValue(){ int value=0; boolean setting=true; String title="Hello"; if(value||(setting title=="Hello")){return 1;} if(value==1title.equals("Hello")){return 2;} } } And: ClassA a=new ClassA(); a.getValue(); What is the result?()A 1B 2C Compilation fails.D The code runs with no output.E An exception is thrown at runtime.” 相关考题
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10. public class Hello { 11. String title; 12. int value; 13. public Hello() { 14. title += “ World”; 15. } 16. public Hello(int value) { 17. this.value = value; 18. title = “Hello”; 19. Hello(); 20. } 21. } and: 30. Hello c = new Hello(5); 31. System.out.println(c.title); What is the result?() A、 HelloB、 Hello WorldC、 Compilation fails.D、 Hello World 5E、 The code runs with no output.F、 An exception is thrown at runtime.
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10. public class ClassA { 11. public void methodA() { 12. ClassB classB = new ClassB(); 13. classB.getValue(); 14. } 15. } And: 20. class ClassB { 21. public ClassC classC; 22. 23. public String getValue() { 24. return classC.getValue(); 25. } 26. } And: 30. class ClassC { 31. public String value; 32. 33. public String getValue() { 34. value = “ClassB”; 35. return value; 36. } 37. } Given: ClassA a = new ClassA(); a.methodA(); What is the result?()A、 Compilation fails.B、 ClassC is displayed.C、 The code runs with no output.D、 An exception is thrown at runtime.
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public class ClassA { public int getValue() { int value=0; boolean setting = true; String title=”Hello”; (value || (setting title == “Hello”)) { return 1; } (value == 1 title.equals(”Hello”)) { return 2; } } } And: ClassA a = new ClassA(); a.getValue(); What is the result?() A、 1B、 2C、 Compilation fails.D、 The code runs with no output.E、 An exception is thrown at runtime.
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单选题10. public class Hello { 11. String title; 12. int value; 13. public Hello() { 14. title += “ World”; 15. } 16. public Hello(int value) { 17. this.value = value; 18. title = “Hello”; 19. Hello(); 20. } 21. } and: 30. Hello c = new Hello(5); 31. System.out.println(c.title); What is the result?()A
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Hello World 5E
The code runs with no output.F
An exception is thrown at runtime.
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单选题public class SwitchTest { public static void main (String args) { System.out.PrintIn(“value =” +switchIt(4)); } public static int switchIt(int x) { int j = 1; switch (x) { case 1: j++; case 2: j++; case 3: j++; case 4: j++; case 5: j++; default:j++; } return j + x; } } What is the output from line 3? ()A
Value = 3B
Value = 4C
Value = 5D
Value = 6E
Value = 7F
Value = 8
考题
单选题class Super { public int i = 0; public Super(String text) { i = 1; } } public class Sub extends Super { public Sub(String text) { i = 2; } public static void main(String args[]) { Sub sub = new Sub(“Hello”); System.out.println(sub.i); } } What is the result?()A
0B
1C
2D
Compilation fails.
考题
单选题class ClassA { public int numberOfinstances; protected ClassA(int numberOfinstances) { this.numberOflnstances = numberOfinstances; } } public class ExtendedA extends ClassA { private ExtendedA(int numberOfinstances) { super(numberOflnstances); } public static void main(String[] args) { ExtendedA ext = new ExtendedA(420); System.out.print(ext.numberOflnstances); } } Which is true?()A
420 is the output.B
An exception is thrown at runtime.C
All constructors must be declared public.D
Constructors CANNOT use the private modifier.E
Constructors CANNOT use the protected modifier.
考题
单选题10. public class ClassA { 11. public void methodA() { 12. ClassB classB = new ClassB(); 13. classB.getValue(); 14. } 15. } And: 20. class ClassB { 21. public ClassC classC; 22. 23. public String getValue() { 24. return classC.getValue(); 25. } 26. } And: 30. class ClassC { 31. public String value; 32. 33. public String getValue() { 34. value = “ClassB”; 35. return value; 36. } 37. } Given: ClassA a = new ClassA(); a.methodA(); What is the result?()A
Compilation fails.B
ClassC is displayed.C
The code runs with no output.D
An exception is thrown at runtime.
考题
单选题public class ClassA { public int getValue() { int value=0; boolean setting = true; String title=”Hello”; (value || (setting title == “Hello”)) { return 1; } (value == 1 title.equals(”Hello”)) { return 2; } } } And: ClassA a = new ClassA(); a.getValue(); What is the result?()A
1B
2C
Compilation fails.D
The code runs with no output.E
An exception is thrown at runtime.
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